I don't know if this question has popped up before but, im currently leveling a DK. It is currently level 83. What professions should i take if it was pure for soloing purposes?
I was thinking about Engineering + ???. Engineering has some great benefits.

You seem to have 6,56% haste while I have 10,84%. Try reforging into haste and see if you can kill them.

Not gonna happen it's my masterfrost gear.

The problem seems to be I can't seem to get them far enough from each other, and I can't really kite them since the knockback and slow thing, but it's probably just me being bad at stuff it wouldn't be the first time - no biggie just went there for the pets and I dot the blob one.

Twin emps should be pretty easy. Stand in corner, and pop necrotic strike on the non melee immune one. Pop DRW + Necrotic spam during it and you should win easily. If you're in the right spot, then the melee one should never move out of range, nor should you be knocked back anywhere.
It's pretty impossible (maybe possible with awesome gear/necro spam) to do it in frost because they're completely immune to frost strike.

I don't know if this question has popped up before but, im currently leveling a DK. It is currently level 83. What professions should i take if it was pure for soloing purposes?
I was thinking about Engineering + ???. Engineering has some great benefits.

I think it's mentioned in the initial post several times, engineering is very useful for movement fights

Secondary I would have to say alchemy it gives the most number of options on what to boost (all flasks/elixirs have double duration and increased effect, not potions though) I like to use Prismatic Elixir since it's a good way to reduce magic damage a bit.

I did Twins as 2h frost with somewhat not very good gear (469). I only Obliterated the melee one and used Frost Strike on the adds. It took some time and i had to use Lichborne self heals and Death Pact practically on cd. Not sure if this is the best strat, though.

If you're having issues with Twin Emps, do it the Cataclysm method. Sit in a corner as Blood until they Berserker Enrage. Their damage goes up quite a bit giving you plenty of Vengeance, and they'll actually die. They also don't hit hard enough to put you in a situation of dying.

Haven't tried, but I doubt it would be hard, the biggest "nerfs" to how I did it came weeks ago.

Building my paladin now. I have all the BoEs you have sub the Chest and I don't plan on taking LW. Think I would be able to solo H-LK 25m as easily as you did without Chest/LW? Or should I get both before attempting it.

I cant do the gunship no matter what I try, going over killing the mage only takes like 3-4 hits, the round before I always kill the back 2 and still have time to kill 2 more in front (with cannons), but my ship takes constant dmg when there should be no one making damage lol I have tried this one 20 times and just cant get it, the first two bosses in blood were tickling me like rogues do, but a non boss I cant get by yet lol

The twins I am in full blood pvp gear (dreadfull no mal gear, and the crafted 460 weapon) speced pvp with pvp enchants and gems and can get them down in about 3-4 mins and I dont even fight them in the corner or anything. I spam all abilities other then diseases which dont work on the damage dealer, I used army at the start with my minion, used my minion again off cd and used d and d. I killed them with full health since even taking fall damage one ds fully heals me. I don't know what else to add except it was very easy this time, I used ds as much as I could because it was giving high damage to the damage dealer (he is the only one I focused on).